Video transmission method, video processing device, and video generating system for virtual reality

Abstract

The disclosure provides a video transmission method for virtual reality. The method includes reorganizing a first video and a second video obtained to generate a third video suitable for transmission through a physical wire, hence avoiding distortion caused by compression of a high-definition video. The disclosure further includes a video processing device and a video generating system employing the video transmission method.

What is claimed is: 
     
       1. A video transmission method for virtual reality, the video transmission method comprising:
 obtaining a first video and a second video, both the first video and the second video having a 2:1 aspect ratio; 
 segmenting the second video from a short side of the second video to generate two first sub videos having a same aspect ratio; 
 segmenting the first sub videos from a long side of one of the first sub videos to generate three second sub videos having a same aspect ratio; 
 generating a third video, wherein the third video comprises the first video, the non-segmented first sub video and the three second sub videos, and a short side of the third video is formed by a short side of the first video and a short side of the non-segmented first sub video, and the other short side of the third video is formed by three short sides of the three second sub videos, such that the third video has a 16:9 aspect ratio; and 
 transmitting the third video through a physical wire. 
 
     
     
       2. The video transmission method of  claim 1 , wherein a long side of the first video at least has 5,760 pixels. 
     
     
       3. The video transmission method of  claim 1 , wherein the operations of segmenting the second video, segmenting the first sub videos and generating the third video comprise operating a shader in a video processing device, such that the segmented second video and the segmented first sub videos are reorganized with the first video into the third video. 
     
     
       4. The video transmission method of  claim 1 , further comprising:
 transmitting the third video to a streaming encoder through the physical wire, and converting the third video into a streaming signal by the streaming encoder. 
 
     
     
       5. The video transmission method of  claim 4 , further comprising:
 transmitting the streaming signal to a virtual reality device; 
 decoding the streaming signal into the third video; and 
 generating the first video and the second video using the third video. 
 
     
     
       6. The video transmission method of  claim 5 , wherein the operation of generating the first video and the second using the third video comprises operating a shader in the virtual reality device, and reorganizing the third video and outputting the first video and the second video to two display mechanisms of the virtual reality device, respectively. 
     
     
       7. The video transmission method of  claim 1 , before the operation of segmenting the second video, further comprising:
 rendering a special effect to the first video and the second video. 
 
     
     
       8. A method for processing video for non-compression transmission, the method comprising:
 receiving a first video and a second video, both the first video and the second video having a 2:1 aspect ratio; 
 segmenting the second video from a short side of the second video to generate two first sub videos having a same aspect ratio; 
 segmenting the first sub videos from a long side of one of the first sub videos to generate three second sub videos having a same aspect ratio; and 
 generating a third video compatible with a transmission standard of a physical wire, wherein the third video comprises the first video, the non-segmented first sub video and the three second sub videos, and a short side of the third video is formed by a short side of the first video and a short side of the non-segmented first sub video, and the other short side of the third video is formed by three short sides of the three second sub videos, such that the third video has a 16:9 aspect ratio. 
 
     
     
       9. The method of  claim 8 , wherein the first video is obtained from a left-eye field-of-view video captured by a video device. 
     
     
       10. The method of  claim 9 , wherein the second video is obtained from a right-eye field-of-view video captured by the video device. 
     
     
       11. The method of  claim 8 , wherein the first video is stitched from two left-eye field-of-view videos captured by two video devices, respectively. 
     
     
       12. The method of  claim 11 , wherein the second video is stitched from two right-eye field-of-view videos captured by the two video devices, respectively. 
     
     
       13. The method of  claim 8 , wherein the first video and the second video are 360-degree virtual reality videos of different fields of view. 
     
     
       14. The method of  claim 8 , further comprising:
 rendering a special effect to the first video and the second video. 
 
     
     
       15. The method of  claim 8 , wherein the physical wire comprises Serial Digital Interface (SDI), High-Definition Multimedia Interface (HDMI) or DisplayPort (DP). 
     
     
       16. The method of  claim 8 , wherein a long side of the first video at least has 5,760 pixels. 
     
     
       17. The method of  claim 16 , wherein a short side of the first video at least has 2,880 pixels. 
     
     
       18. The method of  claim 8 , wherein a pixel number of the third video is a total of a pixel number of the first video and a pixel number of the second video. 
     
     
       19. The method of  claim 8 , wherein the third video has a 7680*4320 resolution. 
     
     
       20. The method of  claim 8 , wherein the operations of segmenting the second video, segmenting the first sub videos, and generating the third video are performed by a shader.